Overview of Project
Are departure delays significantly different between morning and evening flights?
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Flight delays are vey common
nycflight2013 Data
Mornings: 5:00am ~ 11:00am
Evenings: 5:00pm ~ 11:00pm
Observed Difference in Mean Delay
Mean Departure Delay by Time of Day
| evening |
22.729753 |
| morning |
3.492098 |
Observed Difference in Mean Delays (Evening - Morning): -19.23765 minutes
Permutation Test and Results
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Conclusion
Observed difference is highly unlikely to have occurred by chance if the null hypothesis were true.
Strong evidence to reject null hypothesis: red line falls outside the range of the simulated null distribution values.
Potential generalization into other mega airports in US:
- Chicago (ORD, MDW)
- Los Angeles (LAX)
- Atlanta (ATL)
